KR20100096961A - Manufacture of latex coated cotton gloves with reduced offensive flavor by addition of greentea extracts - Google Patents

Abstract

PURPOSE: A manufacturing method of latex coated cotton gloves is provided, which can improve work environment of a factory. CONSTITUTION: A manufacturing method of latex coated cotton gloves comprises: a step of preparing a latex composite using 350 Kg of latex aqueous solution containing natural rubber 60%, KOH 400 g/water 3L, sulfur 5 Kg/water 15 L, TP 1 Kg/water 3 L, and adhesive 600 g/water 6L; a step of preparing mixture solution by melting KOH 400 g, DM 1 Kg, dried milk 500 g, and crushed stone dust 50 Kg using water 60 L; and a step of adding two kinds of green tea extract with different concentration to the latex.

Description

Preparation of latex coated cotton gloves with reduced offensive flavor by addition of greentea extracts}

The present invention relates to the manufacture of latex-coated cotton gloves reduced odor by adding green tea extract, to provide a method for producing latex-coated cotton gloves reduced by adding the green tea water extract made of tea leaves to the latex-coated cotton gloves manufacturing process will be.

Latex-coated cotton gloves are preferred by consumers because latex compounded gloves have excellent durability and work efficiency compared to uncoated cotton gloves. However, latex blend coated cotton gloves are unpleasant, and some consumers are not only disgusted but also have a bad effect on the working environment in the factory due to the unpleasantness in the manufacturing process.

There is a need for a latex compound coated cotton gloves manufacturing method with reduced odor.

The present invention was devised to solve the above problems, and it is intended to find and present a method that can reduce the discomfort of latex compound coated cotton gloves by adding green tea extract to a latex compound preparation process for gloves coating.

In order to achieve the above object, the present invention is to prepare a latex formulation with the addition of green tea water extract extracted with green tea made of tea leaves, and coating the latex formulation with green tea water extract on cotton gloves to reduce the unpleasant odor Coated cotton gloves can be prepared.

In addition, the addition of green tea extract to the latex formulation preparation can also reduce the unpleasant odor generated in the manufacturing process can also additionally obtain an effect that greatly improves the plant environment.

According to the present invention, there is provided a method for producing latex compound coated cotton gloves with reduced odor. The present invention can be utilized as a method for producing latex coated cotton gloves with reduced odor, as well as to reduce the odor of latex compound coated cotton gloves manufacturing process is effective in improving the working environment of the factory.

The present invention provides a method for preparing a latex-coated cotton gloves prepared with a latex blend containing green tea water extract and coating the latex blend with green tea water extract on cotton gloves.

Hereinafter, the present invention will be described in detail in the following examples.

Example 1 Preparation of Green Tea Made from Tea Leaf and Preparation of Green Tea Water Extract

Green tea was prepared by a conventional method. In other words, the tea leaves collected by hand or harvesting machine are steamed or steamed in a pot of 150 ° C to 280 ° C to inert the enzymes contained in the tea leaves, and then the water content is 4-5% through the mind and drying process. Green tea was prepared.

Green tea water extract was prepared by dissolving 20 Kg and 40 Kg of green tea prepared by the above method in 200 L of water for 12 hours, respectively, to prepare two kinds of green tea water extracts having different concentrations.

Example 2 Preparation of Latex Blend with Latex Blend and Green Tea Water Extract

Latex (latex) formulation for the coating of cotton gloves was prepared by the following method. That is, the latex formulation is usually formed by mixing the latex blend and the hard coal blend, the latex blend is 350 Kg of latex aqueous solution (containing 60% of natural rubber), KOH 400 g / water 3 L, sulfur 5 Kg / water 15 L, TP Consists of 1 Kg / water 3 L, Medoel 600 g / water 6 L, light coal blend consists of KOH 400 g, DM 1 Kg, dry milk 500 g, light coal (50 kg) in 60 L water do. Therefore, the latex preparation is an aqueous solution dissolved in about 230 L of water.

The green tea extract added latex preparation was prepared by adding 60 L of two different green tea extracts having different concentrations prepared by the method of [Example 1] to the latex preparation to prepare a green tea extract added latex preparation. Therefore, two kinds of latex green tea extract additive-added latex preparations were prepared. The low concentration green tea extract-added latex preparations with low green tea extract concentrations were obtained by adding 20 g of green tea extract to 1 L of the preparation, and the high concentration green tea water extract latex preparation. Water is 40 liters of green tea equivalent extract added to 1 liter of this preparation.

Meanwhile, the green tea extract-free latex preparation was prepared by adding 60 L of water without the green tea extract to prepare a green tea extract-free latex preparation.

Example 3 Preparation of Latex Coated Cotton Gloves Reducing Unpleasant Coating Coated Latex Preparation with Green Tea Water Extract

The latex coated cotton gloves were immersed in a latex compound preparation to which the green tea water extract described in Example 2 was added for several seconds and then dried by hot air to prepare latex coated cotton gloves. Meanwhile, latex-coated cotton gloves without green tea water extract were prepared in the same manner.

[Example 4] Preference of Latex-Coated Cotton Gloves Added with Green Tea Extract by Sensory Evaluation Using Olfactory

The latex coated cotton gloves prepared with the green tea extract added with the green tea extract (green tea 40 g equivalent extract / 1L) and the latex coated cotton gloves prepared without adding the green tea extract were used by 10 adults (5 males, The five women were evaluated by the five-point scoring method (very good 5, good 4, normal 3, bad 2, very bad 1) of the two latex coated cotton gloves.

Table 2. The results of the odor preference of green tea extract added and no added latex coated cotton gloves

In other words, most people who performed sensory tests gave green tea-added latex-coated cotton gloves with higher odor preference than green tea-free latex-coated cotton gloves, and latex-coated cotton gloves coated with latex preparations containing green tea water extract reduced unpleasant odor. It was confirmed by the sensory test using the sense that the latex coated cotton gloves were prepared.

Example 5 Confirmation of Unpleasant Reduction by Instrumental Analysis

The use of GC-MS equipment (GCMS-QP2010, Shimadzu Corporation, Japan) connected with gas chromatograph (GC) and mass spectrometer (MS), which are useful for the analysis of volatile (odor) substances, The odor reduction effect was verified by the following method.

(1) Sample preparation for GC-MS analysis

Sample preparation for the analysis of odorous substances (volatile substances) is commonly used, such as a solvent extraction method to extract with a suitable solvent, steam distillation method to distill with water vapor, and head space method to inject the odor component as it is.

The head space method has an advantage that the odor component can be analyzed immediately without troublesome operation. In the present invention, a sample was prepared by selecting the odor component analysis method according to the head space method.

That is, each of the latex coated cotton gloves prepared with a latex-coated glove coated with a green tea extract (containing 20 g and 40 g equivalent of green tea per L) and a latex-coated cotton glove prepared with a green tea extract-free latex preparation. Exactly 2 g of the coated glove stopper was taken with scissors, placed in a 22 mL vial, mounted on a headspace device, and connected to the GC sample inlet.

(2) GC-MS analysis conditions

① Head space analysis condition

The temperature of the head space chamber was raised to 80 ° C. and maintained for 20 minutes. Then, the odorous substance filled in the head space was filled in the loop for 1 minute and injected into the GC through the sample inlet.

② GC analysis condition

A 60 m long, 0.25 mm (ID) capillary column filled with VB-WAX as a stationary phase was mounted, and the assay temperature was maintained at 40 ° C. for 5 minutes and then increased by 5 ° C. per minute to 100 ° C. Inlet temperature was 250 ℃, He was used as the mobile phase, flow rate 1.88ml / min, split ratio was 10.

③ MS analysis condition

in source temperature of 200 degreeC and interface temperature of 200 degreeC.

(3) GC-MS analysis result

① Confirmation of odorous substance decrease in chromatogram of GC

The chromatogram of GC obtained by GC-MS analysis is shown in FIGS. 1A and 1B.

That is, the odor component derived from latex coated cotton gloves is shown as a peak. When comparing the peaks of the latex-coated cotton gloves odorous substances coated with latex preparations prepared at different levels of green tea extract added, compared to the green tea extract-free latex-coated cotton gloves, the latex preparations added with green tea extract (green tea in 1L of this preparation) The peak of the smell of latex-coated cotton gloves coated with 40 g equivalent extract) was significantly reduced (Fig. 1b). This phenomenon is shown in Table 1 when the retention time of peaks representing each component and the size of each peak are represented by the peak area for each peak. (a contains 20 g of green tea extract in 1 L of green tea latex formulation; b contains 40 g of green tea extract in 1 L of green tea latex formulation)

Table 1. Major peak and peak size of latex-coated cotton glove odor component detected by GC-MS analysis

As shown in Table 1 and FIG. 1, the odor component indicated as a peak detected between 6 minutes and 20 minutes of staying time in GC chromatography of latex coated cotton gloves prepared with a green tea extract-added latex preparation was added without green tea extract. A significant decrease was observed compared to gloves made with latex formulations. In addition, the reduced peaks (odor component) was also confirmed that the odor component peaks of the coating gloves (green tea added gloves b) added more than the amount of green tea extract added (green tea added gloves a).

② Identification of odor component of latex coated cotton gloves

The mass spectrum of each component detected as a peak by GC-MS analysis was searched by libray of NIST27, NIST147, and WIELY7. As a result, the 6.631 minute retention time was found to be dimethyl ether (100% similarity), 9.476. The component of toluene was identified as toluene (97% similarity), the component of 15.118 minutes iso amylalcohol (94% similarity) and the component of 17.832 minutes was 2-tetradecanol (82% similarity). All of these ingredients are known to have odors, but not pleasing odors but odors.

③ Verification of reduced odor by GC-MS analysis (general)

The results of analyzing the odor component of green tea extract-free latex-coated cotton gloves and green tea extract-added latex-coated cotton gloves were summarized as follows.

A. Odor substances were collected by the head space method and analyzed by GC-MS. As a result, latex coated cotton gloves-derived odor components were detected as peaks.

N. The size of these odor peaks was significantly reduced in the green tea extract added latex coated cotton gloves compared to the green tea extract-free latex coated cotton gloves.

C. Reduction of the odor peak was more pronounced when the green tea extract was added at a higher level.

D. The odor components detected as peaks were identified as dimethyl ether, toluene, isoamyl alcohol and 2-tetradecamol by libray search, respectively, and these components were unpleasant.

M. Taken together, these results confirmed that the addition of green tea extract to latex formulation coated cotton gloves significantly reduced the odor component of latex coated cotton gloves.

1a and 1b are latex coated cotton gloves according to the present invention (1a, green tea extract-free latex coated cotton gloves; 1b, green tea extract added latex coated cotton gloves) gas chromatogram of odorous substances

Claims (1)

A method for preparing latex coated cotton gloves, wherein the green tea extract is added to the latex preparation to reduce unpleasant odor.

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