An economical and effective way of product protection is something all brands are aspiring for. And when it comes to product protection, the use of custom mylar bags comes at the top. These bags are a combination of elegance and durability that allows you to deliver your product to the final destination in the best condition. 

In packaging, few materials have made as dazzling an entrance as Mylar. DuPont was the first company to create this packaging material. This material has: 

• Exceptional strength 
• Flexibility 
• Reflective properties

Personalised mylar bags & pouches are frequently used to pack food to pharmaceuticals. Using these bags, brands can increase the shelf life of their dry food items from months to years. There are plenty of ways in which these bags prove an exceptional addition to your brand, so let’s break down that for you. 

History Of Mylar Bags

The mylar material has exceptional strength that revolutionised many fields. It was considered a shimmering marvel as NASA started wrapping their satellites and insulating their spacecraft. Nonetheless, the journey of mylar material did not end here. By the late 1970s, companies started using Mylar bags for food storage and several other product packaging. These bags provide long-term preservation due to a combination of:

• Airtight sealing
• Puncture resistance
• Barrier against light and moisture
• Prevent oxygen contact

From space-age innovation to everyday practical use, these bags have provided a holistic solution. This material has sealed its place in history as one of the materials that literally stood the test of time.

Types Of Mylar Bags Based On Materials

Customised mylar bags are primarily made of polyester, but some manufacturers combine this material with other options. The purpose of doing so is to improve the barrier properties of the bags. The base films and laminates that are commonly used are as follows: 

Clear Biaxially Oriented PET (BOPET)

This material is produced by the extrusion of molten PET. It is stressed longitudinally and transversely in biaxial orientation, which yields a material with perfect tensile strength and dimensional stability. This material is commonly used for customised mylar bags of the following products:   

• Coffee pouches
• Snacks
• Electronics packaging 

This material has the following properties that make it an ideal choice:

• Excellent mechanical properties
• Low gas permeability
• High gloss

Metallised PET Films

To make smell-proof mylar bags​, one side of the bags is coated with a thin layer of aluminium that provides an opaque barrier against oxygen and light. The metalized PET material blocks more than 90 per cent of light transmission and reduces the oxygen and moisture ingress to extend the shelf life of the sensitive food items. This material is prone to pinholes if mishandled. 

Aluminium Foil Laminates

In this type, a layer of aluminium foil is laminated between polymer films with the help of adhesives or extrusion lamination. The applied layer of aluminium has a thickness of 9–12 µm, which gives the best barrier properties to the bags. This material is not only useful in protecting the packed items from moisture and oxygen, but also gives custom-made mylar vacuum seal bags that give high-end protection to sensitive products such as pharmaceuticals. 

Nylon‑Reinforced Laminates

Nylon or polyamide layers add puncture resistance to mylar storage bags and are an excellent option when you have to pack products with sharp edges, such as coffee beans and granules. These bags have balanced features of strength and heat-sealability due to polyethene. 

Types Of Mylar Bags Based On Style

There are plenty of styles for printed mylar bags based on the specific requirements of the products and your marketing needs. From die-cut mylar bags UK to gusseted bags, you can find plenty of options from our company and get your bags with enhanced functionality. Some of the common options that we give are as follows: 

Stand-Up Pouches 

Stand-up pouches, also called doypacks, are a versatile and popular style of mylar. These bags have a button gusset that unfolds when you fill the packaging with the product. This allows the bags to stand up on the shelves in an upright position. Mylar zipper bags bulk mostly have this style for easy opening and display. Common applications are as follows: 

• Snacks 
• Pet treats
• Coffee beans
• Protein powders
• Dietary supplements

Flat (Four-Side-Seal) Pouches

Flat pouches are one of the simplest options that are used as a single-use packaging, or we can say the product packed in them is used all at once. It is manufactured by sealing all four edges, which creates a compact edge without any gusset. Custom mylar food bags for seasonings usually come in this style. As these bags do not stand upright, they are placed in trays for external support. The material cost and trail size make them quite popular in the mass market. Some of the products that are packed in them are: 

• Seasonings
• Sauces 
• Condiments 
• Gummies 

Three-Side-Seal (Pillow) Bags

Our custom mylar bags wholesale services contain three-side-seal mylar bags that have a pillow-style shape. The back is sealed across the entire length, and the two sides are sealed after filling the product. Three-sided seal bags are an excellent option when products are required to be packed at high speed. Lightweight and low-profile products are packed in them, such as:

• Granola bars
• Candy
• Instant coffee sachets
• Small electronics
• Hardware parts

Zip-Lock Pouches

As you have chosen our company for your packaging material, you can get custom mylar pouches with no minimum design limitation. We give you zip-lock or reclosable bags that can be resealed multiple times for your convenience. This feature allows customers to access the product whenever they want without impacting the quality of the packed items in the long run. So, if you are selling any product that is consumed in portions, then you must get zip-lock mylar bags. You can get these bags in stand-up and flat pouch styles to pack: 

• Bulk foods (like grains  and nuts)
• Baking ingredients
• Powders
• Cannabis products.  

Vacuum Pouches

Vacuum pouches are used when high-end protection is required. After the bags are filled with the product, air is evacuated, and a final seal locks the vacuum inside. This type of custom printed mylar bag consists of the following layers: 

• Nylon
• PET
• EVOH
• High oxygen and moisture barriers

Side-Gusset & Bottom-Gusset Bags

Side and bottom gusset bags have expandable panels that increase the internal volume of the bags and improve their capacity. When these bags are empty, they lie flat because the gussets fold flat inside the bags. Products that are commonly packed in these bags are as follows:

• Coffee
• Pet food
• Rice
• Flour
• Dry bulk items

Spout Pouches

These pouches have a doy pack structure with an integrated plastic spout and cap that create a flexible and resealable container for liquids. The structure of these bags includes polyethylene pouches with an integrated spout and cap that create a flexible and resealable container for liquids. The polyethylene and polypropylene layers in the material allow secure welding of the spout, making it secure for the users to pour liquids. You can securely pack your products without using too much rigid material. The common items are packed in custom mylar bags with logo as follows: 

• Baby food
• Energy gels
• Beverage refills
• Sauces
• Cleaning concentrates

Custom Mylar Bags Based On Size

Manufacturing Process of Mylar Bags

At our company, the sole purpose is to give the customers the best possible quality of packaging bags. From the provision of custom mylar bags with window to the availability of gusset bags, we have all the options in the best possible quality. The quality of our bags relies largely on our impeccable manufacturing facilities, such as:

Polymerisation And Resin Preparation

To manufacture the long chains of polyethylene terephthalate resin pellets, Terephthalic acid and ethylene glycol undergo a polycondensation reaction. In this process, we use Antimony trioxide as a catalyst. Besides this, we add stabilisers that control the molecular weight and thermal stability of the material. The resin pellets are dried to prevent hydrolytic degradation during melting, and the moisture content is reduced below 50 ppm.  

Extrusion And Sheet Formation

Dried pellets are added to a twin screw extruder and are melted at around 280 degrees. The dry pellets are forced through a flat die to produce a continuous mottled sheet. This extrusion process gives remarkable strength to the material. 

Quenching And Initial Thickness Control

The extruded films are then laid onto the chilled roller that instantly solidifies the sheet to a material thickness of 200 to 300 micrometres. Although the resulting thickness of the material is very low, its strength is significant enough to keep the packed items secure. 

Biaxial Orientation (Stretching)

Biaxial orientation is a process in which the material is stretched in two directions. The machine direction stretching is done longitudinally at a temperature of 90 degrees Celsius. For transverse stretching, we stretch the material on a tenter frame. The purpose of transverse stretching is to give the material a molecular orientation with a high tensile strength modulus, which is approximately 4 Giga Pascal. 

Customisation 

The rest of the customisation done on the custom printed mylar bags is selected based on the requirement of brands and the extent to which they want to add a luxurious touch to their packaging. For instance, if a customer needs a custom cookie Mylar bag, then the preferred colours are usually brown or some pastel option without shiny add-ons or metallic colours. 

In the same manner, if the customer wants to get the option of custom holographic mylar bags, then we apply relevant coatings. In the same manner, the selection of custom printing design and colours is also done based on the requirements of the product and the extent of promotions. 

Call Now And Book Your Order In A Few Steps! 

Book your order of custom mylar bags with the printed design of your choice. We have a customisation option with advanced manufacturing facilities that take care of every inch of your bags and give impeccable packaging that can give your product the protection it requires. So book your order at Custom Boxes Market UK and enhance the presentation as well as the protection of your product easily.