download the PDF now - PMMI

Food
packaging is becoming increasingly less rigid: PACK EXPO Internaonal 2012 illustrated
that what was once mostly a bole/jar/box/can market is becoming a
pouch/bag/cup field. Like the marketplace, the technology on display at
PACK EXPO focused on lightweight, material-conserving packaging formats and efficient sys-­tems
to enable marketers to make, fill and pack their own packages rather than packing premade
rigid containers.
Injection-Molded Cup Technologies Enhance Sealability
Nypro Packaging introduced several innovave injecon molded cup technologies. Each provides a uniform,
thin-walled sealing flange to improve efficacy during lid sealing:
Foil encapsulated PP/Foil/PP food cups with a shelf life up to 10 years: The outer PP layer is molded, a
preformed foil sheet with a flat boom and pleated sides is inserted into the formed boom, and the
inside PP layer (blue material in the picture) is injected, compleng the encapsulaon. There is a per-­fectly
smooth outside surface, and there would be no evidence of the foil with a colored outside.
Co-injected PP/EVOH/PP food cups. 32 x 32 cavity molds meet ultra high producon requirements
(greater than any to date), maintaining a .011-inch uniform wall thickness and molding in a 5-second cycle. Nypro indicated
addional advancements are in the works to provide all plasc, co-injected containers with even beer barrier properes.
Injecon molded PP cups for Philadelphia Cream Cheese with 360 o in-mold label: Fea-­tures
included 12 x 12 cavity molds (larger than any to date) and a 5-second cycle me
on a 16 oz. container. The tops for the containers are also in mold labeled to provide
graphics.
Injecon molded cups with a 360 o in-mold label on the sides, overlapping a boom label
for full external container coverage: Labels can be produced with an EVOH layer for 4–12
month shelf-life, or a thin foil layer for up to 4-year shelf-life, providing addional barrier
properes for the container.
A dispensing closure where the closure and flip top are molded simultaneously in a 32
cavity double cube system with in-mold assembly, eliminang the usual secondary as-­sembly
operaon. The system molds the two separate parts in different colors using cu-­be
molds, and assembles them as part of the total molding operaon. Ejecon of the
final parts happens independently from the molding cycle when the mold cubes rotate
90°. It runs an 8-second cycle and produces 100mm+ a year per system. The closures are
currently being used on the P&G Herbal Essence line of products. Benefits include low
unit cost through cycle reducon, WIP eliminaon, floor space reducon and capital cost
reducon. – RCC
More informaon
Aaron Dupont, barrier commercializaon engineer, Nypro: 978.368.4585, aaron.dupont@nypro.com.
Takigawa Corp. is the licensee for h’eat
it, the self-heang soup pouch from
ScaldoPack.
Self-Heating Soup Pouch Debuts
FOOD & FOOD
SAFETY
Clockwise from top le: Foil encapsulated
PP/Foil/PP food cups; In-mold labeled tops
and injecon molded PP cups; dispensing
closure. All from Nypro Packaging.
The self-heang soup pouch technology, “h’eat it,” from ScaldoPack is a “pouch-within-apouch”:
The inner pouch contains a nontoxic quicklime-based heang mechanism acvated by
a push buon on the pouch front. The outer pouch contains the consumable product. Accord-­ing
to the ScaldoPack website, a 220-mL pouch will heat to heated 35°C (about 100°F) in five
minutes aer acvaon.
Licensee Takigawa Corp. displayed the commercialized 220-mL pouch at its booth. The h’eat it
pouch for soup from Abramo, Zwevegem, Belgium, debuted on-shelf in Europe several months
ago and sells there for the equivalent of $3.99. The company also has a self-chilling form that
ulizes the same pouch-within-a-pouch structure, relying on salts for cooling. – RTL
More informaon
Steve Coulson, director, Takigawa Corp.: 416.399.1181; steve@takigawa-corp.com; www.takigawa-corp.com/takigawa-corp/eng/index.html
www.scaldopack.be
11
FOOD