In 2001, the sales volume of Japanese packaging containers was 5.985 trillion yen. Although the price of packaging containers made of paper and cardboard is higher than that of plastic packaging containers, due to the increase in people’s awareness of environmental protection, the demand for paper and cardboard products is increasing. The total consumption amounted to 2.646 trillion yen, accounting for the total amount of packaging materials. 44.2%. At present, 90% of Japan's milk is sold in creased paper packaging. This kind of easily-squashed packaging not only lower production costs, but also can reduce the occupying space, facilitate recycling and reduce transportation costs; Japan's most common The beverage Yakutt Health Drinks uses a bottom tearable cup-shaped container. After tearing the bottom, one can easily flatten the container for easy recycling. At present, many packaging and papermaking industries in Japan have developed and produced new green packaging papers and enriched the green packaging product market.
Far infrared packaging corrugated paper
Japan has developed a far-infrared packaged corrugated paper, which can be processed into a packaging box for packaging fruit, which can extend the retention period of activated water molecules in fruits, so that the fruit's preservation period is 1 times longer than that of ordinary corrugated boxes. the above. The paper is made of 100% natural pulp on corrugated paper, coated with a layer of ceramic that emits far-infrared rays, and then coated with a layer of polyethylene film on top of the ceramic to prevent shedding of the ceramic to make far-infrared corrugated paper.
Edible anti-corrosive papers Japan's Takasaki Paper Co., Ltd. uses fruit pomace, a waste product from the food industry, to produce pomace paper. The method is simple. It removes the grains in the pomace, pulverizes them into pulp, and can be made by adding appropriate amount of wood fiber. After the use of slag paper, it can be easily decomposed and burned or composted. It can also be reused to recycle paper, making it less likely to pollute the environment. Certain companies in Japan also manufacture a kind of anti-corrosion paper that can be used for food packaging. Its production process involves immersing raw paper in an ethanol solution containing 20% ​​succinic acid, 33% sodium succinate, and 0.07% sorbic acid. Dry it. Foods with marinade in this paper can be stored at 38°C for 3 weeks without deterioration.
Dewatering function wrapping paper
A Japanese company has developed a wrapper that has a dehydration function without heating or additives. This kind of packaging paper, called P and S, has a semi-permeable membrane that can only pass through water as the surface material, and a high-permeable pressure material and a polymer water-absorbing agent on the inside. Since the osmotic pressure difference in the liquid state of the food in the liquid state can be shifted to the high osmotic pressure substance through the semipermeable membrane, these water molecules are fixed by the polymer water absorbing agent. The wrapper does not damage the cells of the food tissue. It absorbs water along the intercellular spaces and not only absorbs moisture from the surface of the food, but also absorbs deep water inside, and also has the function of absorbing water at a low temperature. This type of wrapper can inhibit the activity of enzymes, prevent the decomposition of proteins, and reduce the proliferation of microorganisms, so as to maintain the freshness of foods, condense umami components, remove water vapor, and increase the toughness.
Telescopic paper
A paper that uses all wood and pulp as raw materials without adding any synthetic resin and can be directly pressed into packaging containers has been developed by the Japanese paper company. This new paper is 5 to 10 times more stretchable than normal paper. If a special metal mold is used, it can be directly pressed into various shapes of paper packaging containers. The paper packaging container has the same strength as the plastic packaging container and can be used for packaging daily necessities and foods. The production cost of the paper packaging container is not only low but also can be recycled. It is reported that the successful development of the paper can replace plastic packaging containers.
Polylactic acid wrapping paper
Challenge Five Co., Ltd. introduced biodegradable films and envelopes produced by Mit Subishi. The film and letter are also produced from polylactic acid extracted from corn starch and can be offset printed using soy ink “Naturalisâ€. They love the packaging printing industry.
Flexible sheet
Dynic Co., Ltd. develops biodegradable flexible sheet "AuPair Con Sheet" using cornstarch and fatty polyester as raw materials. The goal is to eventually replace PVC. This material is easy to machine and cut, easy to print, and its thickness can be adjusted according to the requirements. Landfill disposal does not pollute the environment. Because of the low calorific value during incineration, no toxic substances such as dioxins are produced, so it is less harmful to the environment.
Deep stamping paper
Japan's Nippon Paper Co., Ltd. has developed and produced fully deep-stamped papers that use natural fibers as raw materials under the name “Npimold Paperâ€, and its stretchability is 5-10 times that of plain paper. This stamping paper can press texturing, graphics and three sets of curved surface when molding, similar to the processing of plastic products, smoothing its convex image can achieve better sealing. The product can be produced by using the current plastic product equipment and molding according to the design scheme. Because it does not require heating and softening before processing, it can increase production efficiency and save energy.
Special coated paper packaging
Unifill, Italy, partnered with Nippon Paper to launch two peelable shell-type paper-packed cheeses in the Japanese food industry. This kind of paper packaging using the special film technology pioneered by Unifell has become more and more popular among Japanese people.
Vegetable paper
Vegetable paper was first developed by Japan and was also called paper dish. Vegetables and foods are characterized by their rich dietary fiber, vitamins, and minerals, of which dietary fiber is fairly stable in processing and production. Therefore, the nutritional loss of processed paper products is very small, and the water content of the products is small (about 10%). Easy to transport and store. Paper dishes can be used in many fields such as convenience foods and edible packaging. There are two kinds of edible paper, one is based on vegetables as the main raw material, the vegetable beating, drying after molding; the other is the refined starch, sugar, and then add other food additives, used to take similar to the papermaking process Method molding. From the application and development perspectives, green products based on vegetables have more potential. Its processing technology and equipment have entered the fourth generation, the highest daily output of up to 30,000 per day on each production line. Japan's Sakai Chemical Research Institute has successfully extracted protein and fat from bean dregs and made pure dietary fiber, which is then processed into edible paper. Others include fruit paper, vegetable paper and seaweed paper. At present, the production of vegetable paper in Japan has formed a certain scale.
Every year in Tokyo, Japan, a packaging design competition is held. An award-winning beverage package called Eco Pac is widely used. The package consists of a 100% recyclable cardboard box and a bag inside the box that holds the beverage, the so-called liner bag box. The main purpose is to make it easy for people to separate the cartons from the bags and to handle them easily when recycling. At present, most of the alcoholic beverages on the market in Japan use such packaging. Another new package design that is accepted by Japanese consumers is standing bags. Since opening the bag is more likely to spill the internal liquid than opening the bottle, the opening of the bag is specifically designed to facilitate opening. In addition to beverages, many of the cooking oils sold in Japan are sold in composite paper packaging, which greatly reduces the use of plastics.