ジンマイプラスチック
PP中空シート, also known as corrugated plastic sheet, coroplast sheet or fluted polypropylene sheet, is used for reusable packaging, 仕切り, レイヤーパッド, signs and temporary surface protection. The right specification depends on the load, dimensions, reuse cycle, printing requirement and working environment of the application.
This guide explains the main options buyers should confirm before requesting a quotation. Functional grades, test methods, tolerances and supporting documents should always be agreed for the specific order.
PP中空シートとは?
PP hollow sheet is an extruded polypropylene sheet with parallel ribs between two outer walls. The hollow structure provides stiffness while keeping the sheet relatively lightweight. カット可能です, しわのある, printed and fabricated into flat sheets, boxes, dividers and other protective packaging components.
Polypropylene is moisture-resistant, but finished-product performance also depends on sheet grade, joints, 印刷, fabrication and use conditions. Buyers should not assume that every specification provides the same impact, outdoor, anti-static or fire performance.
Why Buyers Use PP Hollow Sheet
Lightweight Structure
The fluted construction can provide useful stiffness with less material than a solid plastic panel of similar size. This may make sheets and finished boxes easier to handle, although the final weight depends on thickness, GSM, dimensions and fabrication.
Suitable for Repeated Handling
For applications that involve repeated handling, a correctly specified PP hollow sheet can provide a reusable alternative to some disposable packaging. Actual service life depends on load, cleaning, folding design, handling conditions and storage.
Flexible Fabrication
The material can be converted into sheets, レイヤーパッド, divider sets, 段ボール箱, signs and temporary protection panels. Custom processing requirements should be reviewed together with drawings or samples.
Recycling Considerations
PP is a thermoplastic and may be recyclable where suitable collection and processing facilities exist. Recyclability is affected by contamination, ラベル, inks, mixed materials and local infrastructure. Any environmental or recycled-content claim should be based on the actual material specification and supporting evidence for the order.
一般的なアプリケーション
- 再利用可能なパッケージ: 売上高ボックス, totes and corrugated plastic containers for internal handling and distribution.
- Dividers and layer pads: separation and protection for bottles, components, ガラス, metal parts and other products.
- 電子機器のパッケージング: sheet, boxes and dividers where a defined anti-static or conductive requirement is specified.
- Advertising and display: printed signs, display panels and temporary promotional boards.
- Surface protection: temporary protection for floors, walls and other surfaces during construction, renovation or transport.
- Agricultural and outdoor uses: guards and temporary panels where the required exposure period and UV performance are confirmed.
Key Specifications to Confirm
| Item | Information to Provide | なぜそれが重要なのか |
|---|---|---|
| 応用 | Product, 負荷, handling method, reuse frequency and environment | Defines the performance priorities |
| Dimensions | Length, 幅, thickness and required tolerances | Affects fit, 剛性, packing and material use |
| GSMまたは目標体重 | Required sheet weight per square metre or approved sample | Helps compare specifications and quotations |
| 材料 | Virgin, recycled or project-specific resin requirement | Affects appearance, consistency, cost and documentation |
| Colour | Standard colour, custom colour reference or approved sample | Supports identification and branding |
| 関数 | 静電気防止, conductive, UV-resistant or flame-retardant target, including the test method where applicable | Prevents vague or unverified performance claims |
| 処理 | 切断, しわ, 型抜き, 印刷, 溶接, assembly or edge finishing | Determines tooling and production route |
| パッキング | Bundle quantity, pallet, label and shipping requirements | Protects the goods and supports receiving |
Material and Functional Options
Virgin and recycled PP can both be considered, depending on the application. Virgin material may be preferred when appearance, consistency or a project-specific requirement is important. Recycled content may be considered when the application and agreed performance allow it. Buyers should confirm the required material basis instead of assuming that one option is suitable for every use.
Special functions require clearer specifications than a product name alone:
- Anti-static or conductive: provide the target surface-resistance range, test method and working environment.
- 耐紫外線性: state the expected outdoor exposure, location and acceptance criteria.
- Flame-retardant: identify the required standard, rating, test method and end-use restrictions before quotation.
- Food-contact use: state the market, contact conditions and documents required for the specific project.
Availability and supporting documents must be confirmed by Jinmai for the proposed material and order; a general website description is not a substitute for project-specific verification.
Printing and Fabrication
Printing method, artwork, colour, print area and expected use should be reviewed before production. For fabricated packaging, provide a drawing or physical sample where possible and identify load direction, folding lines, divider layout, handles, closures and any critical dimensions.
- Cut-to-size sheets and die-cut parts
- Creased and folded corrugated plastic boxes
- ディバイダーインサート, ナイフカードとレイヤーパッド
- Printed signs, ラベル, logos and handling instructions
- Welded or assembled structures where the design permits
How to Compare Supplier Quotations
- Compare the same specification. A lower price may reflect a different thickness, GSM, resin basis, tolerance or packing method.
- Confirm what processing is included. Separate sheet supply from printing, tooling, fabrication, packing and freight.
- Check acceptance criteria. Agree dimensions, appearance, colour, print position and functional tests before production.
- Review packing and trade terms. Confirm bundle or pallet details, quantity tolerance, Incoterm and destination requirements.
- Request only relevant documents. Documentation should match the material, market and project rather than relying on general claims.
PP Hollow Sheet Compared with Other Materials
| 材料 | Typical Strengths | Points to Review |
|---|---|---|
| PP中空シート | 軽量, moisture-resistant and fabricatable | 学年, GSM, 負荷, joints, printing and reuse conditions |
| 板紙 | Simple and widely available | Moisture sensitivity and limited reuse in many applications |
| 合板 | Rigid and suitable for some heavy-duty uses | Weight, 水分, handling and export requirements |
| 固体プラスチックシート | Rigid and moisture-resistant | Higher weight and material use for some designs |
Questions to Ask Before Ordering
- Can the proposed sheet meet the stated dimensions, tolerances and target weight?
- What material basis and colour will be used?
- Which functional properties are required, and how will they be verified?
- Is tooling needed for the box, divider or die-cut component?
- What artwork format and print approval process are required?
- What are the packing method, quantity tolerance, trade term and estimated production schedule?
- Which samples or documents can be supplied for this specific quotation?
Jinmai Plastic Manufacturing Support
中山金梅プラスチック包装有限公司, 株式会社. 中山市でPP中空シートと段ボールプラスチック包装を製造, 広東省, 中国. The team supports overseas enquiries for sheets, boxes, 仕切りインサート, レイヤーパッド, printed products and related custom processing.
Before preparing a quotation, Jinmai can review dimensions, 厚さ, GSMまたは目標体重, material, colour, 印刷, fabrication, packing and shipping requirements. Functional grades, サンプル, documents, production schedules and trade terms are subject to confirmation for each project.
見積チェックリスト
- Product application and destination market
- Sheet or finished-product dimensions and tolerances
- Thickness and GSM or approved reference sample
- Material and colour requirement
- Order quantity and expected reorder frequency
- Printing artwork, colour and print area
- Drawing or sample for boxes, dividers or die-cut parts
- Target functional property and test method, if required
- パッキング, labelling, trade term and destination
よくある質問
PP中空シートは防水性がありますか?
Polypropylene is moisture-resistant, but the performance of a finished box or assembly depends on seams, holes, 印刷, fabrication and use conditions. Describe the actual exposure so the specification can be reviewed.
Can logos and product information be printed?
Printing can be discussed for suitable sheet and product designs. Provide artwork, colours, print size, position and expected indoor or outdoor use for review.
What is the production lead time?
Timing depends on material, 量, tooling, 印刷, fabrication, approval and packing. Jinmai will confirm an estimated schedule with the quotation or order details.
Are samples available?
Sample availability, specification, cost and delivery should be confirmed with the export team. A custom sample may require artwork, tooling or a sample charge.
How should certification or compliance requirements be handled?
List the required standard, test method, market and document before quotation. Ask the sales team to confirm what applies to the proposed material and order. Do not rely on an unrelated certificate or a general website statement.
Request a Specification Review
Send your application, dimensions, thickness or target weight, 量, colour, 印刷, functional requirement and packing details to zsjmslyy@163.com, or contact Jinmai by phone or WhatsApp at +86 18925359463. The export team will review the information and confirm the next quotation steps.
