JPS59102337A - Fruit bag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the wrapping of apples, pears, peaches, grapes, etc. in the United States and Britain, and uses a film mainly composed of polyvinyl alcohol (hereinafter referred to as PVA) to reduce the sugar content of fruit pulp. The purpose is to protect the pericarp from sunlight, pests, lice, etc.

BACKGROUND ART Conventionally, bags made of various materials have been widely used as hanging bags for the purpose of providing sun protection for developing fruits and protecting them from diseases, pests, wind and rain, etc. Conventional bags are designed to prevent sunburn and protect the bottom, so they are all black, blue,
Pigments such as purple are used, and the outer clothing of El)t is absorbed by these pigments, reaching the size of Song NL. There was a drawback that it did not work.

The present inventors conducted extensive research into materials for hanging fruits during growing that would improve the above-mentioned drawbacks, and as a result, they discovered that PVA film was sometimes used, and arrived at the present invention. That is, the present invention is a bag for improving the accuracy of fruit and for protecting the surface, which is made of a PVA film as a main component.

It is not clear why the product of this invention lowers the sugar content of fruit, but it does
-1,500 to 2,000 g/m”/2 from 1503
4 Hrs/30μ thickness, reference: polyethylene film 35-180 jJ/yx”/24Hre/30μ
Thickness), day) L transmittance (60 inches) and sunlight reflectance (80 inches)
1 is considered to have a good effect on fruits. It's a size, P.
Fruit bags made of VA film have sufficient tensile and tear strength to withstand impact from pests and wind and rain, so they also have the effect of preserving the fruit skin beautifully.

The PVA film that is the object of the present invention is produced by using a solution casting method, PVA obtained by saponifying polyacetylene vinyl,
Examples include so-called vinylon film, which is made water-resistant or insoluble by heat treatment, formalization, acetalization, etc., of a water-bathable film that has been cured by a known film-forming method such as bath melt extrusion. Bamboo has no restrictions on the degree of infestation of PVA and its history of saponification, but it is usually 500 to 5,000, preferably 1,000 to 2.
．． IJ 00, saponification degree of 75 molar or more, preferably 8
Those having a molar coefficient of 5 or more are preferably used because they are excellent in terms of film frequency, water resistance, and water vapor permeability. However, is the PVA film targeted by the present invention manufactured by Nippon Steel? Not only films that can be made by humans, but also modified PVA such as saponified copolymers of vinyl acid and ethylene.
11 or films obtained by further heat-treating or aging-aging the film. PVA
Film bags can be colored, such as black, blue, or purple, which absorb ultraviolet rays, or colorless, but colorless ones are preferred. Also, the thickness of the bag is 0.02mm~
Q: 1mm can be used, 0.02~0.0mm for the crotch.
04 birds are preferred.

The fruit I-sho bag to which the present invention is applied is not necessarily limited to the commonly used kamasu-zuri, but can be widely applied to sho-buri, kake-babushi, and all other American and British kake-bushi.

The PVA film bag of the present invention may be hung over fruits at any time from after fruiting to the harvesting period, but generally it starts and stops once after fruiting J ↓ [Poppy, Harvesting] ≦ It is. Therefore, it is best to match the thickness of the bag to the size at the time of harvest.

As shown below, if you use the practical bag of the present invention, you won't have to use drugs or other chemicals, and you won't have to use multiple mlk & devices or tools. It is not necessary to replace or remove the bag, and the sugar content of the fruit can be easily improved, and at the same time, the fruit skin can be beautifully finished by protecting it from sunburn, pests, wind and rain, etc., as in the past.

The present invention will be explained in more detail below with reference to Examples, but the present invention is not limited thereto.

Example 1 A transparent PVA film (Denka Nilon Film DF200,
Higashiai degree 1650. A saponification degree of 99.55 molar) #bag was prepared, with both ends of the bottom cut off to prevent water from accumulating inside.

For comparison, I prepared a conventional colored paper bag.

100 apples were distributed in each of the bags from the second batch of L, and the bags were hung so that the apples were distributed almost evenly within one tree. The bagging date was June 17th, 1957, and the
The anniversary date was August 61, 1981.

At the time of harvest, 10 plants were randomly selected from among 100 plants in the valley to measure the sugar content, and at the same time an external inspection was conducted.

The sugar content is the result of measuring the sugar concentration in apple juice by an Agricultural Extension Office engineer using a sugar content meter (ATAGO hand-held refractometer N1). The outside inspection was carried out by 8 Agricultural Improvement and Extension Office staff and 40 general consumers, and the majority of the judgments were accepted.

The J limbs are shown in Table 1.

Table 1 It can be sold as

Example 2 Notsa [J, Ll 4・il#l O) Transparent PVA film (Zenryoku Vinylon Film DF2 [JO, Imperial grade 1
650, Ken ratio l-L 99.55 7 l φ) Used to make a bag, applied to apple 1 ring (Sangai Ll t+1.jl 5
The procedure was the same as the actual ffff1 +5'lJ 1 except that 7 moves were made on June 17th and Shuden H Akio [157 moves on October 8th].

Table 2 Example Rind 1 Fuji” for JA (Fukurokake Nissho 1157 June 1
The investigation was carried out in the same way as Itsumugi Example 1, except that the investigation was carried out on the 7th, November 15, 1957, the 1st day of investigation.

From Table 6 Ihi no Mi ttlA From Yuu J, the field hit of the bag made of PVA film is 1'', and the fruit is 1, and the Kinuta 1 is compared with 1, which is 2 from 1 j. ．． (J ~ 6.5・stone eraser, also /￥peek is・harukato red <4 tomoe, shi" 7 light, disease life insect, protected from 1 lice 114, "sho 1i + "1"
Ctm Sod is Saruyo 1shi F, conventional black, tY
, Po, etc.) Unlike the no kalpa of 74 colors ρ, there is a
I'm giving you a second glance at the same person, Nikiri Akane.

Claims (1)

[Claims] A bag for improving the accuracy of fruit and protecting the surface, which is made of a film whose main component is polyvinyl alcohol.