A robotic packet machine from the Pack Zone can produce a wide variety of packet shapes and sizes. Examples are sachets, sticks, pillows, tea bags, and stand-packs. Options include eyelets for display racks, notches/cuts for easy opening, mesh films, and transparent packets (or panels).
Pressure heat seal textures include ribbed, checked, cross-hatched, and smooth. Also available are custom designed sealing/cutting to provide easier opening methods, virtual spouts, display eyelets, etc.
Simple sachet packets with three or four side seals.
Popular stick packs—long and slim variation of pillow packs.
Stick packs with two opening systems, plus a rounded variation for comfort.
Doy-type stand pack with notches for opening.
Front and back view of a pillow pack.
Many types of packets can be produced as connected strips.
4-sided pyramid shape—can use nylon mesh film for tea, herbs, etc.
Filter paper teabag with dipping string. Can be packed within an outer sachet.
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Many Pack Zone machinery customers also rely on us to supply films and papers to form packets and cartons. Polyester, BoPP, nylon, paper, and foil are used—often as laminates. These are usually custom printed for our customers.
The laminates and materials listed below are pressure heat-sealed (except for paperboard used in cartons). Sealing temperatures are 120 to 150°C, depending on material and thickness. All can be printed on the outer surface (except filter paper and cellophane wrap).
There are many other variations of film and lamination possibilities in addition to the typical possibilities below. Let us know your particular application details for an expert recommendation.
Ultrasonic sealing is often an alternative to sealing method. The heat required for melting is only generated inside the thermoplastic (typically PE or PET) sealing layer. One result is quicker sealing and cooling of the seal. Contact the Pack Zone for analysis of how ultrasonic sealing can meet your need for speed.
Outer PET (polyethylene terephthalate) laminated over PE (polyethylene) inner film is used for food, pharmaceutical, etc. Heat resistance, strength, transparency, gloss, and barrier protection yield cost-effective flexible packets. Appropriate for most packet types except for tea/coffee/herb bags and some doy stand-packs.
Outer BoPP laminated over high-gloss aluminum foil with an inner PE layer provides high tensile strength, chemical and dimensional stability, plus gas and aroma barrier properties. BoPP (biaxially oriented polypropylene) is polypropylene which has been stretched in longitudinal and transverse directions, plus heat set. Appropriate for most packet types except for tea/coffee/herb bags.
The middle layer of VM PET is polyester film metallized by aluminum vapor deposition. This provides a barrier against oxygen, moisture, and light.
Outer nylon laminated over an inner PE layer provides effective packaging for food, pharmaceutical, and other products. Used especially for liquids. Can also be spec'd for boiling/oven applications.
Outer nylon sandwiching aluminum foil over an inner PE layer provides a more expensive option for some demanding food and pharmaceutical applications.
One example of nylon micro-mesh use is for herbal tea in a tetrahedral (pyramid) shaped packet with a dipping string and tag attached. For that packet, ultrasonic sealing is used.
A printed paper exterior backed by PE (polyethylene) often provides a desirable cost-effective option for packets. The PE interior facilitates effective sealing. Used for sugar/salt/pepper sticks and sachets, among other assorted uses.
Various filter papers can form packets for tea, herbs, coffee, and desiccant/deoxidizer. They can be heat sealed with patterned presses in Pack Zone machines.
Printed paperboard is a common material for packet cartons. Cellophane can provide an outer wrap. Paperboard and cellophane have the added benefits of being biodegradable.
When you buy film, laminates, or paperboard from the Pack Zone, custom printing is available with a wide range of ink, color, and finishing options. Just let us know your needs and budget constraints.
Printing for laminates is typically done on an intermediate layer such as the aluminum layer. That ink/printing is then covered with an outer layer, thus protecting the print. The outermost layer can be glossy, semi-gloss, or matte (flat).
Printed paper used for forming packets does not typically have an outer layer over the paper, but does have an inner layer of PE which serves to melt slightly and weld in the sealing process.
Overall laminate thickness can be up to 180 microns. Single layer films may be as little as 5 microns. 1 mil equals 25.4 microns.
Custom printed paper/PE laminate for producing matching salt and pepper sachets on a Pack Zone machine. For single line machines, the width is set for minimal cutting and production waste. For multiline machines, widths up to 900 mm are available—which are cut into strips for packet production by the machines.
The Pack Zone can supply pigments which become visible when exposed to ultraviolet light from the sun, and disappear in the dark. Indirect sunlight from a nearby window is sufficient to activate. This provides an inexpensive and entertaining feature which can also serve as an anti-counterfeiting measure.