August | 2018 | Clamshell Packaging Manufacturer

Understanding the Temperature Limits of Different Food Packaging

In order for hot foods to stay hot and cold food to remain cold, it is important to understand the temperature limits of different containers in order to ensure the best performance. We often times receive questions from those who want to know if a foam container is microwave-safe or if our oven-safe products can go in the freezer. So, here’s a helpful guide that will help you understand your temperature limits to determine the proper use of Genpak products.
Plastic Containers, Cups, and Dinner ware food container temperature chart
Foam has excellent insulation properties and decent thermal resistance making it applicable for both hot and cold foods. Hot foods will stay hot longer and cold foods will stay cold longer in a foamed PS container. Not only is it a popular choice due to its sustainable qualities, but it is also the most versatile substrate and very economical for a variety of food packaging applications.

PET Containers, Oven-Ready Containers, and Drinking Cups
PET is a solid plastic material most often used to produce water and soda bottles. PET is a versatile substrate that is widely accepted by most municipalities curbside recycling programs. PET containers included up to 30% post-consumer recycled content, in our conservational efforts to eliminate waste, and reduce the burden on the environment. There are two types of PET products that each have very distinct purposes: APET, which is safe for freezing and room temperature display and CPET, which is safe in the oven, microwave, and freezer.
CPET – CPET material is simply a crystallized form of PET, which is able to withstand very high temperatures for oven ready applications. Great care must be taken when using these products in the oven and we offer a Use & Handling sheet that can guide you through. These products are perfectly safe in the oven, microwave and even the freezer as it can withstand temperatures of up to 400°F.

FROM:Genpak

The arrangement of a meat tray

A meat tray or party tray is a mixed platter of cold cuts which may be laid out at a buffet or party. Typically, meat trays are paired with trays of cheeses, dips, crackers, breads, fruits, and other snack foods for guests, and they are usually garnished with vegetables. Many delis make meat trays which can be stocked with custom foods for special events, and it is also possible to assemble your own meat tray, using sliced meats, cheeses.

The arrangement of a meat container is usually designed to be at least vaguely artistic, and to minimize hand contact with the food. The meats are often rolled up and spiked with toothpicks so that people can grab the toothpicks instead of touching the meat directly, for example, or tongs will be provided for lifting up desired cuts of meat. The meats may be creatively fanned, stacked, or otherwise arranged so that the tray looks attractive to people approaching it.

The meats used on a meat tray vary widely. Cured meats are commonly on offer, along with roasted meats like beef, chicken, and turkey. The tray is often lined with lettuce or other foliage in addition to waxed paper, and garnishes like vegetables cut into fantastic shapes, carrot sticks, sliced tomatoes, and shredded parsley are common; many people use garnishes to separate the different types of meat on the tray, making it easier for people to identify them. Edible flowers are also acceptable and sometimes quite pleasant garnishes.

Never reheat food in plastic

Kitchen organization has gotten much easier. We have stackable food storage containers in every shape and size. They are convenient, portable and reusable. But are we paying for this convenience with our health?

Vegetables in storage containers
Knowledge is key when it comes to choosing which types of plastic we should be storing our food in. By following a few simple steps, you can be well on your way to ridding your kitchen of easily avoidable chemicals that could be harmful to you and your family’s health.

Rid your kitchen of known harmful chemicals
Flip over your food containers and take a look at the small number printed on the bottom. If the recycling number is #3 or #7, it likely contains either BPA (bisphenol A) or phthalates (used to make PVC plastics) which mimic estrogen and can interfere with hormone levels. These can be especially harmful for still-developing bodies so, unless the plastic container clearly states that it is BPA and PVC-free, the safest thing to do is to get rid of them. Canada and the European Union have already banned BPA use in baby bottles and many people, including me, are not going to wait around for the U.S. to follow suit. If you don’t want to part with your plastics completely, be sure that your containers are either #2, #4 or #5, which are widely considered safe for food storage.

Never reheat food in plastic
Even if your food packing are labeled as one of the safe plastics, always transfer food to a glass or china dish before reheating in the microwave. All plastics contain possible harmful chemicals, and when heated, those chemicals can leech onto the food that is next to them. Take-out containers are one of the worst culprits when it comes to plastics that contain toxic elements, so never reheat food in those containers.

Take care when washing plastic
Dishwashers use very hot water and steam to clean dishes thoroughly — which leaves us with sparkling plates and glasses — but can unfortunately pose a problem when it comes to plastics. Just like microwaving, heating plastic can release harmful chemicals, so play it safe and wash your plastic containers by hand in lukewarm water.

All of our food service packaging is made from food grade PET and PP material. Click the links below to see the complete line.

Face seal blister packaging

Face seal blister packaging that covers all or a portion of the pre-printed blister card and delivers see-through plastic blister packaging
Elaborate multi-cavity plastic blister packaging that hold several discrete items in their own custom shaped pockets
Trapped plastic blister packaging that allow a blister to be held between a front and a back blister card
Front blister packaging with a compatible rear plastic blister to allow a 2-sided blister pack with cavities on two sides and a blister card sandwiched in-between
Thermoformed blister packaging with a clear or colorful thermoformed tray insert for a custom hold of a delicate item or for a high-end visual affect
Blister packaging designs that need to seal to materials other than blister card stock, such as medical grade tyvek and rigid PVC
Blister Packaging -Xunda Industrial Packaging (Commodity packaging, Gift packaging)

Blister Packaging can be used in a variety of Industries and applications including:

Electronics
Medical
Pharmaceutical
Consumer Goods
Office Supplies
Toys
Sporting Goods

What is Blister Packaging
A plastic blister pack is a two-piece package made up of a front-facing, clear thermoformed plastic blister that is sealed on its back to a pre-printed blister card. Blister packs are an inexpensive way to combine the visibility of a clamshell with the graphics of a folding carton.

Blister packs are pre-formed plastic packaging typically used for small consumer goods and pharmaceuticals.

The primary component of a blister pack is a clear cavity (or pocket) made from a formable web of thermoformed plastic. The pack usually has a sealed backing of paperboard, foil or plastic. A two-sided blister that folds onto itself is often called a clamshell package.

The most common materials used by blister pack manufacturers are PVC, PETG and PET.

Plastic clamshell Packaging

Clamshell Packaging is a one-piece container consisting of two halves joined by a hinge area which allows the structure to come together to close. Clamshells are often made of a shaped plastic material, in a way that is similar to a blister pack. The name of the clamshell is taken from the shell of a clam, which it resembles both in form and function.

Clamshell Packaging can be made of a variety of plastics such as polystyrene, polyester, PVC, foam sheets, etc. The material can be made by thermoforming or can be injection molded into the desired shapes. A single piece of material is used for the top and bottom with a “living hinge” that is integral with the material, rather than added separately.

Folding cartons made of paperboard or molded pulp can also be of a clamshell shape. It can also be made of cellulose fiber such as sugarcane-bagasse, wheatstraw, wood pulp, etc.

Clamshells can use a variety of means of closing or sealing. Some have self-locking tabs, snaps, or have a friction fit. Others use adhesive, pressure-sensitive tape, labels, staples, or are heat sealed.

When plastic clamshell containers are securely heat sealed, they are tamper resistant and deter package pilferage. These security packages are intentionally difficult to open, sometimes requiring customers to use scissors or a knife to open.

What is PET ?

Plastics like PET most likely touch your everyday life. Polyethylene Terephthalate, known commonly as PET or PETE is best known as the clear plastic used for water and soda bottle containers. As a raw material, PET is globally recognized as a safe, non-toxic, strong, lightweight, flexible material that is 100% recyclable. In fact, it’s THE most widely recycled plastic in the world! Virtually all municipal recycling programs in the US accept PET packaging, with recycling of thermoformed PET containers on the rise. PET can be identified by looking at the bottom or backs of containers for the #1 resin identification code – a symbol recognized by the #1 in the middle surrounded by “chasing arrows”.

PET packaging is also widely used in life

When packaging food, the following items must be taken into consideration:

When packaging food, the following items must be taken into consideration:
Barrier protection from any outside contaminant, i.e. water, air, dust, etc.
Structural integrity and product protection. Whether shipping via UPS, FedEx or common carrier, shock, vibration and load support are at the forefront of food packaging design.
Graphic design on food packaging is probably the single most important factor of product “sell through”. Keep this in mind when working with a graphic artist. Ask us how to take advantage of our printing techniques and print finishes to attract more end users off the aisle and to your product.
Food packaging security is an insurance policy on your product. Proper closures, seals and design will help to insure product safety and security.
Packaging is where portion control starts. Properly sized bags, boxes, bottles, and jars lead to a more controlled pack out environment.

The benefits of clamshell packaging

Clamshell packaging is very important for fruit. They provide ventilation through their perforation. Overall, there are three types of fruit packaging that provide superior ventilation:

Closed packaging, without holes— this is made from a very thin film. Through a disintegration process, it allowed gasses to slowly pass through it.

Micro-perforated packaging–this is packed with holes, and it allows carbon dioxide, water vapors, and oxygen to pass through it.

Macro-perforated packing–this is packed with large holes specifically for ventilation.

It’s really important to choose the right kind of flexible fruit packaging materials in order to ensure that the fruit remains fresh. The same goes for vegetable packaging. If you want your fresh products to remain fresh and ready for your consumers to eat, then you’re going to need to choose the right package.

Do you know the reason for medical blister packaging?

1. Does the raw material have heat sealing properties?

In the medical blister bubble industry, the preferred material for medical use and hot pressing properties is PETG, followed by PET modified material GAG. The reason why the sealing is not strict, it is necessary to exclude whether PET is used, because PET itself has poor hot pressing performance, and it is highly likely that the heat sealing strength is insufficient.

2. Is the heat-sealed mold uneven or damaged?

When heat sealing dialysis paper medical blister blister, heat sealing mold is needed. Place the blister pack in the heat seal mold and seal the dialysis paper. If the surface of the heat-sealed mold is not flat or other abnormalities occur, it is highly likely that the hot pressing in a certain area is not strict.

3. Heat sealing machine parameters setting

The blister blister for different materials and thicknesses is heat-sealed with different types of dialysis paper, and the sealing time, temperature and pressure value settings are different.

The above three points are the reasons for our analysis of this situation, for reference, more details, you are welcome to consult the contact phone at the top of the website at any time, we will be happy to provide you with detailed services!

Hangzhou Xunda Clamshell Packaging Co., Ltd. —- Established in 2003, as a leading manufacturer of clear plastic packaging. We specialize in producing high quality clamshell and blister packaging products. Our products can be widely used in the packaging of foodstuff, cosmetic, hardware, handicrafts, medical care and electronics products . Our products series including clamshell,food trays,blister etc. All of our products use high quality PET, PVC, PS,BOPS,K-HIPS,PP and ABS material. All of the raw material had passed SGS material test.