Have you ever looked at the bottom of a plastic bottle or jar to discover its material? It's very likely you've encountered one constructed from polyethylene terephthalate (PET or PETE). Renowned for its strength, resistance to breakage, and glass-like clarity, PET is a preferred material in various industries. As a leading provider, TricorBraun offers an extensive selection of PET plastic bottles and jars.

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PET is characterized by several beneficial properties, making it an optimal choice for many products. Factors like chemical resistance, an impressive strength-to-weight ratio, shatterproof nature, and cost-effectiveness in production make it a go-to material for packaging consumables.

Why Choose PET Plastic Bottles?

Here are some common myths about plastic bottles and the truth behind them.

• Not all plastic bottles can be recycled
  While some recycling and waste management services have restrictions, almost all plastic products from grocery stores, including single-use bags, are recyclable.
• Plastic is the primary source of litter
  Interestingly, cigarette butts, not plastic, are the most common type of litter worldwide. Despite the unfortunate sight of plastic waste in our environment, it can be collected and recycled.
• Plastic containers cause cancer
  This notion began with a viral email and has persisted despite a lack of scientific evidence linking plastic bottles and food containers to cancer over the past decade.

PET plastic bottles offer numerous advantages for product storage, consumers, and the environment alike. These include:

• Energy Efficiency
  PET bottles require significantly fewer natural resources and less energy to produce compared to glass, including fossil fuels and water.
• Recyclability
  Did you know PET plastic bottles are entirely recyclable? Modern advancements have enabled manufacturers to make these bottles 30% lighter, reducing the plastic used.
• Chemical Resistance
  PET forms a robust barrier against external elements, preventing oxygen passage. It does not interact with food or water, making it ideal for consumable goods.
• Shatterproof
  Unlike glass, PET does not shatter or break, making it a safer and more economical choice for transport.
• Versatility
  PET can be molded into various shapes more affordably than glass, allowing brands to create unique packaging designs, from water bottles to soda containers, helping their products stand out on shelves.

Understanding PET Bottles and Their Suitability

PET's popularity stems from its exceptional strength-to-weight ratio, cost efficiency, and safety record. It's lighter than glass, reducing transportation costs while ensuring product safety and reliability.

During manufacturing, PET is designed to be strong yet flexible, making it suitable for various types of plastic bottles and containers. Each bottle undergoes rigorous testing to meet safety standards, ensuring a secure packaging solution that is energy-efficient, cost-effective, and recyclable.

The Safety of PET Plastic

PET plastic is approved for food and beverage packaging by the FDA and similar bodies worldwide, having been deemed safe for over 30 years.

Public concern often revolves around chemical leaching from plastic bottles into their contents. The FDA rigorously tests for any transfer of substances from plastic to liquid, ensuring they remain within safe limits.

Additional safety considerations include:

• Phthalates
  PET does not contain phthalates, despite the name's suffix sounding similar.
• Endocrine Disruptors
  Contrary to popular belief, PET plastics do not contain these substances.
• Heat and Dioxins
  PET plastics do not contain dioxins and do not produce them when heated or exposed to high temperatures.
• Reusing Bottles
  While PET water bottles can often be reused, those labeled for single use should be recycled accordingly.

In conclusion, PET is the go-to plastic for direct-to-consumer goods, particularly for food and beverage packaging. Many brands prefer it for its comparable strength and flexibility to glass, coupled with lower production and transportation costs.

TricorBraun provides a wide range of PET products. Explore our selection of lightweight PET bottles and jars. For any inquiries, feel free to contact us via phone or email, and we’ll be happy to assist.

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Your Guide to Cap Liners and Seals

Cap liners and seals play a crucial role in product protection and shelf life extension. Although they are often used interchangeably, it's important to differentiate: a seal may also refer to tamper-evident wraps or packaging tapes, aside from the protective film inside a container. This article focuses on the protective film that prevents leakage and contamination.

Cap liners might be an afterthought in package design, but they offer robust protection for your products. This article delves into the distinctions between cap liners and seals and provides guidance on selecting the right type for your needs.

What Are Caps and Closures in Packaging?

Caps and closures are essential elements in packaging designed to securely seal containers, preventing leaks and contamination. Available in various forms such as screw-on caps, flip-tops, and child-resistant closures, they are critical in maintaining product freshness, safety, and user convenience.

Common Types of Cap Liners and Seals

Cap liners, usually tucked inside or adhered to the lip of a container's closure, create a secure seal to protect the product and prevent spills. They also add benefits like venting, barrier protection, and tamper evidence.

Below are some common types of cap liners and seals:

Basic Liners

Basic liners are generally made from materials like foam, pulp, or foil. They consist of a single layer that provides an initial seal and helps reseal the container.

Pressure-Sensitive Liners

These liners use adhesive to seal to the rim of a container when pressure is applied. While suitable for one-time use and tamper evidence, they are not ideal for resealing and may lose adhesion under certain conditions.

• They must be applied at room temperature between 60°F and 80°F.
• The container's lip must be clean for proper adhesion.
• The closure must be screwed on tightly and left undisturbed for 24 hours for adhesive to set.
• Not suitable for liquids, especially oil-based products.

PS-22 is a commonly used pressure-sensitive liner, compatible with both plastic and glass containers but not suitable for sealing liquids and has a six-month shelf-life.

Induction Liners

Also known as Heat Induction Seals, these provide tamper-evident security through a heat induction process. Compatible with various container materials like PE, LDPE, HDPE, PET, or PVC, these liners consist of multiple layers to ensure a secure, airtight seal.

• One-Piece Induction: A single-layer liner that adheres to the container lip upon induction. Ideal for products like sauces, shampoos, and lotions.
• Two-Piece Induction: During induction, the wax layer melts, releasing the backing layer to stay in the cap while the foil adheres to the container. Common in the pharmaceutical and automotive industries.
• Vented Liners: Featuring a breathing system to prevent container bloating during transportation. Ideal for chemicals, pharmaceuticals, and agricultural products.
• Lift 'n' Peel™: These induction liners are easy to open and offer tamper-evident security, commonly used for liquid bottles.

The choice of an induction liner should consider factors like the type of product, application method, and resealing needs.

Cap with Cone Liner

These liners, built into the cap, use LDPE to ensure a close seal for leak-prone products. Often used with glass bottles, especially for essential oils.

Plastisol Liner

Designed into metal caps, these liners offer an airtight seal ideal for hot-filled food products like jams and jellies.

Pulp and Poly Liners

These two-layer liners use pulp on one side and PVC on the other, suitable for both liquid and solid products.

Pulp and Foil Liners

Pressed paperboard on one side and aluminum foil on the other, these liners are resistant to hydrocarbons and ideal for food-related applications.

Foam Liners

General-purpose foam liners, like the F217, offer chemical resistance but do not create an airtight seal. Suitable for household chemicals and personal care products.

Unlined Cap

These caps lack a liner and are suitable for non-liquid products that don't require high security.

Factors to Consider When Choosing Cap Liners and Seals

Making the right choice involves considering product type, container compatibility, chemical resistance, and environmental conditions.

Product Compatibility

The seal should match the product's composition. For specialized guidance, consult a product specialist.

• Oil-based products require specific caps to resist leakage and maintain integrity.
• Acidic substances need caps resistant to corrosion.
• Food-grade applications should comply with safety standards.
• Alcoholic solutions require caps to prevent evaporation and leakage.

Sealing Performance

Choose between reusable seals and single-use, tamper-evident seals based on your product's needs.

Temperature and Environment

Opt for liners made for high temperatures or harsh environments if your product requires it.

Chemical Resistance

High basic or acidic level chemicals require more protective seals.

Closure Type

The closure type affects the liner style needed for effective sealing.

Permeability

Products sensitive to moisture will benefit from non-porous liners.

Advantages of Using Liners and Seals

Liners and seals are critical for preventing leaks, spills, and product degradation. They can extend shelf life, reduce waste, and improve product appearance and ease of use.

Industries That Rely on Cap Liners and Seals

Liners and seals are especially important in food and beverage, chemical, pharmaceutical, personal care, and automotive industries, providing essential security for liquid products.

Choosing the Right Fit for Your Product

Selecting the right liner involves understanding your product, environmental factors, industry regulations, material compatibility, seal integrity, liner thickness, and application method.

Understand Your Product

Know your product's composition—whether it's a liquid, solid, or powder.

Identify Environmental Factors

Consider storage and usage environments, including temperature and humidity.

Review Industry Regulations

Compliance with industry-specific regulations is essential.

Select the Right Material

Choose a material that offers the required barrier properties and aesthetics.

Assess Seal Integrity

Determine the level of security your product needs, such as tamper evidence or airtightness.

Consider the Liner Thickness

The thickness affects protection; choose based on your product's needs.

Think About Application Method

Consider whether the sealing process is manual or automated.

These considerations will help you select the perfect cap liner or seal, ensuring product safety and customer satisfaction.

Sustainability Goals

Consider your company's sustainability goals when choosing materials for cap liners and seals. Opt for sustainable options that align with your green initiatives.

Enhancing Customer Experience

Effective cap liners and seals are integral to product packaging, offering protection and ease of use. Paramount Global can help simplify your selection process, ensuring you find the ideal solution for your needs. Contact our packaging experts for assistance.

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