Resin molded products

Abstract

The present invention addresses the problem of achieving a long-term rust-proofing effect on a wide range of articles such as cast iron, steel plates, or galvanized steel plates. As a means for addressing this problem, there is provided a resin molded body having a structure in which a polyolefin resin layer 1 containing a carboxylic acid ammonium salt and a polyolefin resin layer 2 containing an aliphatic carboxylic acid metal salt are laminated.

Description

Resin molded body

[0001] The present invention relates to a resin molded body.

[0002] As described in Patent Document 1, a rust preventive agent composition containing a water-soluble rust preventive aid together with an ammonium alkyl dicarboxylate as a vaporizable rust preventive agent, and a rust preventive agent resin composition obtained by incorporating the rust preventive agent composition into a thermoplastic resin are known. Further, as described in Patent Document 2, a base resin sheet that directly adheres to a film containing a vaporizable rust preventive agent is adhered by thermal lamination, and a metal product packaging container made of a multilayer sheet that is secondary-molded so that the resin film containing the vaporizable rust preventive agent is on the metal product side is also known.

[0003] Japanese Patent Application Laid-Open No. 2007-308726, Japanese Patent Application Laid-Open No. 2007-230568

[0004] By adopting a laminated sheet composed of two layers as a rust preventive film for storing metal products and the like, it is possible to exhibit a rust preventive effect for a longer period. However, for example, according to the invention described in Patent Document 1, when using a rust preventive film having a resin layer containing a vaporizable rust preventive agent and a water-soluble rust preventive agent, it is difficult to control the generation of the vaporizable rust preventive agent during use. As a result, it has been difficult to sustain the generation of the rust preventive agent over a long period. Also, as described in Patent Document 2, it has been known that a rust preventive effect can be exhibited over a long period by laminating a base material sheet on one side of a sheet containing a vaporizable rust preventive agent. However, it has not been possible to achieve long-term rust prevention with these sheets, and even now, a long-term rust preventive effect is required for a wide range of articles such as cast iron, steel plates, and galvanized steel plates.

[0005] The present inventors, after diligently studying to solve the above problems, have found that they can be solved by the following means, and have come to the present invention. 1. A resin molded article having a structure in which a polyolefin resin layer 1 containing an ammonium carboxylate salt and a polyolefin resin layer 2 containing an aliphatic carboxylate metal salt are laminated. 2. The resin molded article according to 1, wherein the polyolefin resin layer 1 contains a carboxylate metal salt. 3. The resin molded article according to 1 or 2, wherein the polyolefin resin layer 2 contains a nitrite metal salt. 4. The resin molded article according to any one of 1 to 3, wherein the polyolefin resin layer 1 and / or 2 contains one or more of a carboxylic acid, a benzotriazole compound, and a tolyltriazole compound. 5. The resin molded article according to any one of 1 to 4, wherein the average particle size of the ammonium carboxylate salt is 20 μm or more. 6. The resin molded article according to any one of 1 to 5, wherein a base layer is laminated. 7. The resin molded article according to any one of 1 to 6, wherein the resin molded article is in the form of a sheet or a bag. 8. The resin molded article according to any one of 1 to 7, wherein the polyolefins used in the polyolefin resin layers 1 and 2 are resins of the same density.

[0006] According to the resin molded article containing an ammonium carboxylate salt having a specific particle size of the present invention, a container, sheet, or bag made at least partly from this molded article can maintain its rust-preventive effect for a longer period of time when it contains products such as metal products that may rust, or when it is packaged together with such products. Therefore, it is possible to reliably prevent the occurrence of rust for a longer period of time when transporting or storing metal products.

[0007] The present invention is a resin molded article comprising resin layer 1 and resin layer 2, and may also include a base layer as needed. The embodiments of the present invention are described below. (Ammonium Carboxylate Salt) The ammonium carboxylate salt in the present invention may be either an aliphatic ammonium carboxylate salt or an aromatic ammonium carboxylate salt. Usable ammonium carboxylate salts include butyric acid, isobutyric acid, methacrylic acid, valeric acid, caproic acid, caprylic acid, capric acid, lauric acid, tridecyl acid, myristic acid, palmitic acid, stearic acid, sorbic acid, oleic acid, oleic acid, isohexanoic acid, 2-methylpentanoic acid, 2-ethylbutanoic acid, isoheptanoic acid, isooctanoic acid, 2-ethylhexanoic acid, isononanoic acid, isodecanoic acid, 2-propylheptanoic acid, isoundecanoic acid, isododecanoic acid, 2- One or more ammonium salts of aliphatic carboxylic acids such as butyloctanoic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, undecanedicarboxylic acid, and dodecanediic acid, or ammonium salts of aromatic carboxylic acids such as benzoic acid, aminobenzoic acid, salicylic acid, p-tert-butylbenzoic acid, o-sulfobenzoic acid, 1-naphthoic acid, 2-naphthoic acid, phthalic acid, isophthalic acid, terephthalic acid, and cinnamic acid can be used. Furthermore, in resin layer 1, some aliphatic carboxylic acid ammonium salts tend to bleed out onto the surface of the resin molded product, thus degrading the product's appearance. Therefore, using aromatic carboxylic acid ammonium salts may be preferable in terms of product appearance.

[0008] The ammonium carboxylate content is preferably 0.01 to 10 parts by weight, more preferably 0.1 to 9 parts by weight, and even more preferably 0.2 to 6 parts by weight, per 100 parts by weight of the resin layer. If the content is less than 0.01 parts by weight, it is difficult to achieve sufficient rust prevention, and if it exceeds 10 parts by weight, molding becomes difficult. The ammonium carboxylate is contained in the resin layer 1 in particulate form, and its average particle size is 20 μm or more, preferably 20 to 400 μm, more preferably 20 to 200 μm, and even more preferably 20 to 100 μm. This average particle size is determined based on the major axis of the particles of ammonium carboxylate contained in the resin layer, excluding particles with a major axis of 10 μm or less. This is because fine particles may not contribute significantly to maintaining long-term rust prevention, and therefore it means that there are few fine particles and a large amount of particles within a certain range of particle size are contained. Furthermore, the maximum particle size of the ammonium carboxylate salt contained in the resin layer 1 is preferably 5000 μm or less, more preferably 3000 μm or less, and more preferably 500 μm or less. If the particle size of the ammonium carboxylate salt exceeds 5000 μm, there is a risk of reduced strength of the resin molded article and contamination of metal products due to particle shedding. The maximum particle size is the largest particle size among the measured particle sizes of 1000 particles. When the average particle size and / or maximum particle size are within this range, protrusions are formed on the surface of the resin layer 1 where the ammonium carboxylate salt particles are covered by the resin. The presence of such protrusions allows for the generation of more rust-preventive gases, contributing to improved rust prevention. In addition, these protrusions on the film surface have the effect of preventing adhesion to the articles to be rust-prevented, and prevent the ammonium carboxylate salt particles from directly contacting the articles to be rust-prevented and contaminating their surfaces. However, when ammonium carboxylate particles are blended into the resin constituting the resin layer, and the resin is melted and kneaded, and then molded into a sheet or the like, the ammonium carboxylate powder before blending may be pulverized, resulting in a smaller average particle size.Therefore, the average particle size in this invention is a value relating to the ammonium carboxylate salt contained in the resin layer 1 after the resin layer 1 has been formed. By including this ammonium carboxylate salt with a specific particle size, the amount of rust-preventive gas generated can be controlled, thereby stably maintaining the rust-preventive effect over a long period of time.

[0009] (Carboxylic Acid Metal Salts) The carboxylic acid metal salts that can be contained in the polyolefin resin layer 1 in the present invention may be either aliphatic carboxylic acid metal salts or aromatic carboxylic acid metal salts. The polyolefin resin layer 2 in the present invention contains aliphatic carboxylic acid metal salts. These carboxylic acid metal salts include isobutyric acid, methacrylic acid, valeric acid, caproic acid, caprylic acid, capric acid, lauric acid, tridecyl acid, myristic acid, palmitic acid, stearic acid, sorbic acid, oleic acid, oleic acid, isohexanoic acid, 2-methylpentanoic acid, 2-ethylbutanoic acid, isoheptanoic acid, isooctanoic acid, 2-ethylhexanoic acid, isononanoic acid, isodecanoic acid, 2-propylheptanoic acid, isoundecanoic acid, isododecanoic acid, 2-butyloctanoic acid, sulfate One or more of the following can be selected: aliphatic carboxylic acids such as coric acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, coric acid, azelaic acid, sebacic acid, undecanedicarboxylic acid, and dodecanediic acid, or aromatic carboxylic acids such as benzoic acid, aminobenzoic acid, salicylic acid, p-tert-butylbenzoic acid, o-sulfobenzoic acid, 1-naphthoic acid, 2-naphthoic acid, phthalic acid, isophthalic acid, terephthalic acid, and cinnamic acid; and metal salts such as potassium, calcium, and magnesium.

[0010] Of the above carboxylate metal salts, the content of the carboxylate metal salt contained in resin layer 1 is preferably 0.001 to 10 parts by weight, and more preferably 0.01 to 5 parts by weight, per 100 parts by weight of the contained resin layer 1. If it is less than 0.001 parts by weight, it is difficult to exhibit sufficient rust prevention, and if it exceeds 10 parts by weight, not only does molding become difficult, but it also becomes difficult to exhibit long-term rust prevention. Of the above carboxylate metal salts, the content of the aliphatic carboxylate metal salt contained in resin layer 2 is preferably 0.001 to 10 parts by weight, and more preferably 0.01 to 5 parts by weight, per 100 parts by weight of the contained resin layer 2. If it is less than 0.001 parts by weight, it is difficult to exhibit sufficient rust prevention, and if it exceeds 10 parts by weight, not only does molding become difficult, but it also becomes difficult to exhibit long-term rust prevention. Furthermore, even if aromatic carboxylate metal salts are included instead of aliphatic carboxylate metal salts, sufficient rust prevention is not achieved. Furthermore, the resin layer 2 may also contain an aromatic carboxylic acid metal salt, to the extent that it does not impair the effects of the present invention.

[0011] (Carboxylic Acids) The carboxylic acids in this invention may be either aliphatic carboxylic acids or aromatic carboxylic acids. These carboxylic acids include isobutyric acid, methacrylic acid, valeric acid, caproic acid, caprylic acid, capric acid, lauric acid, tridecyl acid, myristic acid, palmitic acid, stearic acid, sorbic acid, oleic acid, oleic acid, isohexanoic acid, 2-methylpentanoic acid, 2-ethylbutanoic acid, isoheptanoic acid, isooctanoic acid, 2-ethylhexanoic acid, isononanoic acid, isodecanoic acid, 2-propylheptanoic acid, isoundecanoic acid, isododecanoic acid, One or more aliphatic carboxylic acids such as 2-butyloctanoic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, undecanedicarboxylic acid, and dodecanediic acid, or aromatic carboxylic acids such as benzoic acid, aminobenzoic acid, salicylic acid, p-tert-butylbenzoic acid, o-sulfobenzoic acid, 1-naphthoic acid, 2-naphthoic acid, phthalic acid, isophthalic acid, terephthalic acid, and cinnamic acid can be used. The content of these carboxylic acids is preferably 0.001 to 10 parts by weight, and more preferably 0.01 to 5 parts by weight, per 100 parts by weight of the resin layer containing them. If it is less than 0.001 parts by weight, it is difficult to further improve the rust prevention properties, and if it exceeds 10.0 parts by weight, not only does molding become difficult, but it also becomes difficult to exhibit long-term rust prevention properties.

[0012] (Benzotriazole compounds and toltriazole compounds) In the present invention, one or more benzotriazole compounds and toltriazole compounds selected from benzotriazole, 4-methylbenzotriazole, 5-methylbenzotriazole, etc. can be used. The content of these benzotriazole compounds and toltriazole compounds is preferably 0.001 to 10 parts by weight, and more preferably 0.01 to 5 parts by weight, per 100 parts by weight of the resin layer in which they are contained. If the content is less than 0.001 parts by weight, it is difficult to further improve the long-term rust prevention performance, and if it exceeds 10 parts by weight, not only does molding become difficult, but it also becomes difficult to exhibit long-term rust prevention performance.

[0013] (Metal Nitrite Salt) In the present invention, one or more metal nitrite salts selected from sodium salt, potassium salt, calcium salt, magnesium salt, etc. of nitrite can be used as the metal nitrite salt. The content of these metal nitrite salts is preferably 0.001 to 10 parts by weight, and more preferably 0.01 to 5 parts by weight, per 100 parts by weight of the resin layer containing them. If it is less than 0.001 parts by weight, it is difficult to further improve the rust prevention performance, and if it exceeds 10 parts by weight, not only does molding become difficult, but it also becomes difficult to exhibit long-term rust prevention performance.

[0014] (Resin Layers 1 and 2) The resins constituting each of resin layers 1 and 2 can be selected from one or more polyolefin polymers, that is, olefin homopolymers, and / or copolymers using olefins as monomers, and used independently for each layer. Examples of olefins (olefin monomers) constituting polyolefin polymers include ethylene, propylene, 1-butene, 3-methyl-1-butene, 1-pentene, 3-methyl-1-pentene, 4-methyl-1-pentene, 1-hexene, and 1-octene. Therefore, examples of polyolefin polymers include ethylene polymers, propylene polymers, 1-butene polymers, 1-hexene polymers, and 4-methyl-1-pentene polymers. These polymers may be used individually or in combination of two or more. In other words, the polyolefin polymer may be a mixture of various polymers. Among the above, examples of ethylene polymers include ethylene homopolymers (polyethylene) and copolymers of ethylene and other monomers (ethylene copolymers). Examples of ethylene homopolymers include low-density polyethylene (LDPE), linear low-density polyethylene (L-LDPE), medium-density polyethylene (MDPE), and high-density polyethylene (HDPE). Examples of ethylene copolymers include ethylene-propylene copolymer, ethylene-1-butene copolymer, ethylene-1-pentene copolymer, ethylene-1-hexene copolymer, ethylene-1-octene copolymer, and ethylene-4-methyl-1-pentene copolymer. The ethylene units (constituent units derived from ethylene) contained in the ethylene copolymer only need to be greater than 50% of the total number of constituent units (usually 99.999% or less), but for example, they can be 80-99.999%, 90-99.995%, and even 99.0-99.990% of the total number of constituent units. Examples of propylene-based polymers include propylene homopolymer (polypropylene) and copolymers of propylene with other monomers (propylene copolymers).Examples of propylene copolymers include propylene-ethylene copolymers, propylene-1-butene copolymers, propylene-1-pentene copolymers, and propylene-1-octene copolymers. The propylene units (constituent units derived from propylene) contained in the propylene copolymer only need to be 50% or more (usually 99.999% or less) of the total number of constituent units, but for example, they can be 80 to 99.999%, 90 to 99.995%, and even 99.0 to 99.990% of the total number of constituent units. Furthermore, polyolefin polymers may contain constituent units derived from monomers other than olefins, as long as this does not impair the objectives of the present invention. Examples of monomers other than olefins include unsaturated carboxylic acids (acrylic acid, methacrylic acid, etc.), unsaturated carboxylic acid esters (methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, dimethyl maleate, diethyl maleate, etc.), and vinyl esters (vinyl acetate, vinyl propionate, fumaric acid, maleic anhydride, maleic acid monoester, etc.). These may be used individually or in combination of two or more. It is preferable that the constituent units derived from monomers other than olefins in the polyolefin polymer constitute 40% or less (usually 0.001% or more) of the total number of constituent units, even if present. For example, it can be 0.001 to 25%, 0.005 to 15%, and even 0.01 to 10% of the total number of constituent units. The density of the polyolefin resin is 0.880 to 0.950 g / cm³ from the viewpoint of processability. ３This is preferable. Furthermore, from the viewpoint of mechanical strength and processability, the melt flow rate (MFR) is preferably in the range of 1.0 to 10.0 g / 10 min. Having an appropriate viscosity during melt processing makes it possible to encapsulate and coat particulate ammonium carboxylate salts in the resin, preventing the rust inhibitor from falling off the resin molded article. In addition, known additives added to resins, such as antiblocking agents (AB agents), lubricants, antioxidants, antistatic agents, ultraviolet absorbers, and processability improvers, can be added to resin layers 1 and 2 within a range that does not hinder the effects of the present invention. Note that even without incorporating ionomer resin or functional group-containing polyolefin resin into resin layer 1 or resin layer 2 for the purpose of retaining the rust inhibitor in the resin layer, the present invention can exhibit sufficiently long-term rust prevention. Furthermore, the thickness of resin layers 1 and 2 is independently 30 to 500 μm, and more preferably 30 to 200 μm.

[0015] The reason is unknown, and it also varies depending on the type of metal being rust-prevented, but even a molded article consisting only of a resin layer 1 containing only an ammonium carboxylate salt exhibits a certain degree of long-term rust prevention. However, by simultaneously containing one or more of a carboxylate metal salt, carboxylic acid, benzotriazole compounds, and tolyltriazole compounds, a molded article with superior long-term rust prevention can be obtained. Furthermore, by laminating the resin layer 1 containing an ammonium carboxylate salt with a resin layer 2 containing one or more of an aliphatic carboxylate metal salt, metal nitrite salt, carboxylic acid, benzotriazole compounds, and tolyltriazole compounds, the long-term rust prevention can be further improved. Although the detailed mechanism is not clear, it is thought that by setting the particle size of the ammonium carboxylate salt within a specific range, convexity is formed on the film surface, thereby exhibiting a long-term rust prevention effect.

[0016] (Base Layer) The resin molded article of the present invention may be further provided with a base layer on the surface of resin layer 1 and / or resin layer 2. The base layer is provided for purposes such as providing strength to the molded article of the present invention, providing gas barrier properties and water vapor barrier properties, and improving tactile feel and aesthetics. The material constituting the base layer can be a material that does not hinder the rust prevention effect of resin layers 1 and 2, and is preferably a material that has excellent adhesion to the resins constituting resin layers 1 and 2. Therefore, the material constituting the base layer can be a resin that can be used for resin layers 1 and 2, a resin that has excellent adhesion to resin layers 1 and 2, as well as woven fabric, nonwoven fabric, and paper. When a resin is used, various known additives can be included in the resin layer. The resin layer may be porous or not. As for the method of molding such a resin base layer, it may be molded at the same time as molding resin layer 1 and / or resin layer 2, or it may be molded separately from resin layer 1 and resin layer 2 and then laminated by known means.

[0017] (Manufacturing and Use of Resin Molded Articles Having Resin Layers 1 and 2) Resin molded articles having resin layers 1 and 2 can be formed by known means such as extrusion, inflation, vacuum forming, and pressure forming, and can have any shape such as a film, sheet, bag, laminated sheet, tube, or box. The surface with resin layer 1 may be positioned on the inside of a container or packaging sheet, that is, on the side of the article to be stored or packaged and rust-prevented, or conversely, the surface with resin layer 2 may be positioned on the inside of a container or packaging sheet, that is, on the side of the article to be stored or packaged and rust-prevented. However, in this invention, the average particle size of the ammonium carboxylate salt is within a specific range. However, since ammonium carboxylate salts may be crushed and have a smaller average particle size during the process of adding to and kneading with resin, and during the molding process, care must be taken to ensure that the average particle size after molding is within the specific range defined in this invention. By including ammonium carboxylate salts with this specific particle size, the amount of rust-preventive gas generated can be controlled, and as a result, the rust-preventive effect can be stably maintained over a long period of time. Furthermore, by employing two resin layers, moisture gradually penetrates from the surface of resin layer 2 or 1 into the interior, resulting in only a small amount of rust-preventive gas being generated. Therefore, a high level of rust prevention can be maintained more stably over a long period without the need to add rust-preventive sustained-release agents such as carboxylic acid-modified polyolefin polymers, waxes, nonionic surfactants, or inorganic porous materials. In addition, a wide range of materials can be targeted for rust prevention, including cast iron, steel plates, and galvanized steel plates.

[0018] The present invention will be further described in detail by the following examples and comparative examples. Note that the examples represent one embodiment of the invention, and the present invention is not limited thereto. Low-density polyethylene [Sumitomo Chemical Co., Ltd., Sumikasen F200, density = 0.924 g / cm³] ３[MFR = 2.0 g / 10 min] The rust-preventive components shown in Table 1 were added to 100 parts by weight, and the mixture was stirred and mixed by hand blending to prepare the molding compounds. Tubular films were made from these compounds using an inflation extrusion molding machine at a molding temperature of 150°C. For Examples 1 to 13 and Comparative Examples 6 to 10, molding was performed using a two-layer machine so that the thickness of the two layers was the same. Comparative Examples 1 to 5 were molded using a single-layer machine.

[0019] ◎ Rust Prevention Test A. [Rust Prevention Test of Rust Prevention Film] The test specimen described in [C] below was suspended by nylon fishing line within a frame measuring 100 mm (length) x 100 mm (width) x 150 mm (height), and the frame was sealed with a gusseted film. After leaving this test configuration in the test environment described in [B] below for a specified period, the rust formation state on the surface was evaluated based on the evaluation method described in [D] below.

[0020] B. [Test Environment] 25°C, 70% RH: 4 hours; 50°C, 95% RH: 4 hours; Transfer time: 2 hours, total 12 hours / cycle; Evaluation of long-term effect: 7, 14 days (14, 28 cycles)

[0021] C. [Test specimens] Cast iron (JIS G 5501) Size: φ30 mm x 8 mm Steel plate (JIS G 3141) Size: 1.2 mm x 30 mm x 50 mm Galvanized steel plate (JIS H 8610) Size: 1.4 mm x 30 mm x 50 mm

[0022] D. [Corrosion Prevention Evaluation Criteria] ◎: No rust or discoloration ○: Spot rust or slight discoloration △: Rust or discoloration on less than 10% of the test piece's surface area ×: Rust or discoloration on 10% to less than 50% of the test piece's surface area ××: Rust or discoloration on 50% or more of the test piece's surface area

[0023] [Measurement conditions for the average particle size of ammonium carboxylate salts] Resin layer 1 was photographed using a LEICA DFC295 stereomicroscope, and the measurement was performed based on the data. Since particles with a particle size of 10 μm or less were not included in the measurement, the average particle size as used in this invention is the value obtained by the following formula, using a population of 1000 particles with a major axis exceeding 10 μm: Average particle size = (Sum of major axes of particles exceeding 10 μm) / Number of particles

[0024]

[0025] In each example and comparative example, the amount of "1 part," etc., added is the amount added (in parts by weight) in 100 parts by weight of each resin layer. Each example is an example of a molded body in which resin layer 1 (thickness 50 μm) and resin layer 2 (thickness 50 μm) are laminated to have a total thickness of 100 μm. According to the results of Example 6, the evaluation was ○ even after a 14-day test on cast iron, but as described in Comparative Example 1, when 1 part each of ammonium benzoate and sodium sebacate was added to one resin layer, the evaluation of the 14-day test on cast iron was △. According to the results of Examples 1 to 5 and Examples 7 to 10, when the average particle size of the ammonium carboxylate salt was 20 μm or more, sufficient rust prevention was achieved in 7 days for cast iron, steel plate, and galvanized steel plate. This result was equivalent to Example 6 and Examples 11 to 13, which had similar compositions except for particle size. In particular, as shown in Example 5, when ammonium adipate and benzotriazole were used in combination as resin layer 1, and sodium sebacate and benzoic acid were used in combination as resin layer 2, excellent long-term rust prevention was obtained for cast iron, steel sheets, and galvanized steel sheets. In contrast, Comparative Examples 1 to 5, which used only one layer, did not perform well in the test evaluation for at least one of the 7-day or 14-day tests for cast iron, steel sheets, and galvanized steel sheets. Furthermore, Comparative Examples 6 to 10, which contained an aromatic carboxylate metal salt instead of an aliphatic carboxylate metal salt in resin layer 2, did not perform well in the test evaluation for at least cast iron and steel sheets.

Claims

Page 1 of 1 page of Claims 1. A resin molded product structured in such a way that a polyolefin resin layer 1 containing ammonium salts of carboxylic acids, and a polyolefin resin layer 2 containing metal salts of aliphatic carboxylic acids are layered together.

2. A resin molded product under Claims 1 in which the polyolefin resin layer 1 contains metal salts of carboxylic acids.

3. A resin molded product under Claims 1 or 2 in which the polyolefin resin layer 2 contains metal salts of nitrous acids.

4. A resin molded product under any of Claims 1 through 3 in which the polyolefin resin layer 1 and / or 2 contains at least one of the carboxylic acids, benzotriazole compounds, and tolyltriaazole compounds.

5. A resin molded product under any of Claims 1 through 4 in which the average particle size of the ammonium salts of carboxylic acids is 20 µm or more.

6. A resin molded product under any of Claims 1 through 5 in which the base material is layered together. 7.

8. Any one of the claims 1 through 6 regarding resin molding products where the resin molding product is a sheet-like or bag-like object; 9. Any one of the claims 1 through 7 regarding resin molding products where the polyolefins used therein, polyolefin resins 1 and 2, are resins of the same density;